Type-printing telegraph.



Ho; 665,734. Patented Ian. 8, 19M.

- A. FRANKE.

TYPE Pmmma TELEGRAPH.

(A plication filed Jan. 18, 1899A (No Model.) 2 Sheets-Sheat-l.

, .11 E -41||||||H|| I I @z, 922 3 Z4 Z6 27 It WITNESSES Patented Ian. 8, I90l. A. FRANKE.

. TYPE PRINTING TELEGRAPH.

(Application flledlfan. 18, 1899.)

2 Sheets-Sheet 2-.

(No Modal.)

w/r/vsssts:

' ,1 [MEN/70R:

477'0RA/EW To all whom it may concern:

- to form thearmature of a polarized electro- UNITED STATES PATENT OFF CE.

ADOLF FRANKE, BERLIN, GERMANY.

TYPE-PRlNTlNG TELEGRAPH.

, sPncImcA'rIoN forming part of Letters Patent No. 665,734, dated January 8. 190i. I Application filed January 18, 1899. Serial. No. '7Q2,633. (No model.)

Be it known that I, ADOLF FRANKE, a subject of the German Emperor,'-residing at 94 Markgrafenstrasse, Berlin, S.W., German Empire, have invented certain new and useful Improvements in Type-Printing Telegraphs;

and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to type-printing telegraphs.

The invention consists in the herein-described apparatus.

Of the accompanying drawings, Figure 1 is a diagram natical illustration of my improved apparatus as it is used with, continuous currents. Fig. 2 is 'a detail view-of parts, and Fig. 3 is a diagrammatical illustration of the apparatus as it isusedwith alternating currents. i The same characters of reference indicate the same parts in all the figures.

a, Fig. 2, is a shaft on which the type-wheel B is firmly mounted. Besides the type-wheel the escapement-wheel C is likewise mounted firmly on the shaft aand is provided with a rigid arm L, projecting radially between two pins fastened in a toothed wheel J loosely mounted on the shaft (1. Lastly, a projecting nose or cam N is rigidly fastened on the said shaft a. All thesev parts are shown beside each other in Figs. 1 and 3 for the sake of clearness. As will be seen in thesefigures, a lever D, provided with an anchor at one end,

-.engages with the escapement-wheel O; i The lever D is pivoted in b,and itsfree 'end ismade magnet The radial extension L' is provided with aspring M, which also engages with the pins N and N thus forming an elastic coupling between the wheels 0 and J.

The teeth of the wheel J areadapted to lift a" contact-spri'ng K, which-when released engages with the contact hi The shaft ctis surrounded by a ring provided with pinss,

such as is employed usually in thel-Iughes.

apparatus. I p

A, Figs. 1 and; 3, represents a casing con taining a. spring, which'is supposed to drive the shaft 'a'by means of wheel-gearing in the usual way. a

P is ail operating-key which makes conta't with It and 7;"? when it is, depressed, and at the same time by meansof the sliding bar Q operates the three-armed lever B, causingit.

to touch either of the contacts 10 or. It}. The free arm of this lever B in its turn engages with the lever T, pivoted in e, and resting on the nose N, fixed on the shaft 0. and adapted to make contact with R The lever G carries at its end a printing roller and is operated 'v the electromagnetF. It engages with the arm (1', pivoted in o and S. The arm U, rests on the edgeol' the pylindrical spring-casing A with so much friction that it is moved in the direction of the rotation indicated by the arrow when it is released.

. being rigidly connected with the arms U and The arm .8 carries the spring W, adapted to engage with that partof the lever B which projects below the pivot.

H represents an ordinary line-relay operating the contact-lever It, so as to make it toucheither of the contacts k or 70 Z Z Z Z Z Z Z are binding-posts. L and L are conductors leading into the line.

LB' is the line battery, the two halves of which, OB and 013 are arranged to be used as local batteries. 7

V is a switch by means of whichatelephone is supposed to be placed in circuit in case the direct transmission of speech is preferred, when it is turned into the position indicated by X;

- 1, 2, 3, 4., 5, 6, 7, s, 9,10 11,12,13,1and14 are conductors connecting the difierent parts of the apparatus. I

' The object of this apparatus is to represent a sim pletype-printing telegraph so constructed that the same-apparatus can be used as transmitter-and as receiver and. that the trans.- mitter can be operated by manipulating a number of keys corresponding to the-differ- 'ent letters and signs of the ordinary alphabet. In order that such an apparatus may be adapted: to be used. by any untrained person, it is necessary that the apparatus itself audits operation should be of the simplest too possible description and it should return the operators have ceased to use it.

For the sake of clear-nes's the operation of my apparatus will be described at first as if itwere only meant to act as a transmitter.

When the apparatus is at rest, all the parts are in the positions shown in the drawings. The contact-arm 71 of the relay II touches contact k, R touches 7;, l touches In, T is lifted off A by the nose N, and K is lifted off 713 WVhen the apparatus is to be put in action, the operator at the transmitting-station only has to depress the button I of his apparatus, whereby the line-current closed. When the key 1 is depressed, first the contact it is broken and then the contact 70 is closed. Thereby a current is caused to flow from the positive terminal of the line-battery LB to the binding-post 7f and through the line L to the receiving apparatus. After passing through the latter the current returns through L, passes over binding-post Z conductor 1, switch V, conductor 2, the winding of the electromagnet of the relay H, conductor 3, the key P, contact 11 conductor 4, and over the binding-post Z back to the negative terminal ol the battery. The relay thereby is caused to attract its armature, and thus to close a local circuit, in which a current starts from the positive terminal of the local battery OB over binding-post- Z conductor 5, [0 h, conductor 6, electromagnet E,conductor 7, printing-magnet'F, conductor 8, and returns over Z to the battery.

causes the printing-lever G to be attracted and by meansof the arm d moves the lever tact-lever T to touch the contact k".

S, pivoted in c, and. thereby causes the con- As N is released the clockwork begins to'rotate. Furthermore, it should be remarked that the lever-D is not movedby this means, because the direction of the current is the same as that of the current which has last passed through the polarized electromagnet, and therefore to the negative terminal of 0B cannot cause the armature to be shifted. Since currents of diiferent directions are used, means are provided to cause the last current always to flow through the apparatus in the same direction as the first that has passed through it. When the button P is fully depressed, the contact-lever R is shifted from contact to contact k by means of the sliding bar Q and remains in this position as long as the operation of the apparatuslasts. When the key P is released, contact is again malde between P and lafland likewise h returns to c.'.

013 over the binding-post Z through 8, F, 7, E, 6, h, k, 9, 70 T, 10, 4, and over Z back By means of this current passing through E the lever D is operated, the shaft and with it the clockwork is released, and by the motion of J, K is caused totouch k By this means simultaneously a line-current is caused to flow- This current Therefore a local current is caused to how from the positive terminal of the battery coarse antomaticallyinto the original position when from the positive terminal of theline-battery LB over Z Z L, the receiver apparatus L", Z 1, v, relay H, 3, 11k, 11, R, 7a, 12, K, 752-13, 4, and back over 71" to the negative terminal. By this current-the armature H is attracted, h is cancel to touchin the armature D is shifted, and by meansof the rotation of the shaft a'thus caused K is lifted off whereby the line-current is interrupted and the contacts in the relay H are again changed. The same process .is repeated over and overagain until no furtherkey is touched.

It should be remarked that the printingmagnet is prevented from fully attracting its armature by the quickness with which the current changes, so that-the paper is not brought into contact with the type-wheel.

If now a letter-key-as, for example, X, Fig. 2 is depressed, one of'the pins s of the disk is lifted by the key-lever in the same manner as in the Hughes apparatus. This pin intercepts the motion of the'extension O,

fastened to the wheel J, and arrests the wheel, and thereby likewise brings the shaft (1 to a standstill. The latter, however, since it is not'rigidly coupled with J, can; continue in its rotation as far as thespace between the pins N and N admits. The spring M is hereby depressed. By arresting the drivingshaft the following operations are caused: Supposing the shaft is arrested when K is -making contact with it a line-current is made to flow from the positive terminal of the battery LB over Z L, the receiver L, l, V, 2, H, 3, P, 70 11, k", 12, K, it 13, 4, and back over Z to the negative terminal of the, battery. By this current the relay H is operated, 7c is replaced by 70 and the local current of the battery OB is started; The electromagnet E thereby operates the armature D, and G is attracted by F. Thus of longer duration can pass through F during the stoppage the letter which happens to be placed opposite the printing-roller will be printed ofi, because G can be fully attracted. After the'letter-key has been released the since 'a .current relay and the-contact-wheel J in-turnwill again make contacts untilthe eXt'ensionO strikes another pin 3. If 0 is arrested while the contact betweenK and k is interrupted, exactly the same operations will be caused, with this difference only, that the local cu rrent issues from 013 action of the current is for the most part analogous to that of the transmitter, with this difierence only, that the operation of the In the receiver the starting-key is omitted and that therefore the lever B is not shifted. After the button P of the transmitter has been depressed a current is first sent through the line L, passes over Z into the receiver, and goes through conductor 14, k", R, 11,, P, 3, relay H, 2, V, 1, Z, andreturns over L' to the transmitter. The armature of His attracted, and h is made to touch 76?. By this means first the local circuit of OB is closed just the same as in the transmitter. A current consequently flows from the positive terminal of OBf over Z 5, 70 h, 6', E, 7, E, 8, Z, and back to the negative terminal of OB. By this currentG is attracted and S isshif-ted so asvito bring the arm T into contact with kfi and now both the local circuits can come-interaction in turn,

as has been explained-withreference to the transmitter, andfwill operate the two armav tures D and G. a

The elastic coupling between-the type-wheel and thecontact-makingiarrangement is provided in order to insure exact synchronism between the two-type-wheels while'the print-4 F and E are excited, and consequently D is I also when any successive keyis touched, theshifted and will release the shaft. However,

since the latteris arrested by s it cannot turn;

In the receiver'this-isdilferent, because here the arm 0 does not strike any of the pins s, and therefore can continue to turn over one more letter until it is arrested by the anchor D. Therefore the transmitter would lag behind to the amount of one letter.- If, however, the shaft is coupled loosely with the contact arrangement, though the latter be arrested the type-wheel.-.will be free. to move forward as far as that of the'reoeiver.

When the key P of the trnnsmitterh'as once .been depressed, both instruments would con-. tinue to run down as long as the clockwork.

admits; but by the following arrangement they will throw themselves out of circuit automatically and will return into the'position of rest. Fonthis purpose the elastic arm or spring U is fixed on the lever S, which rests against the circumference of the spring-casing A with just enough friction to cause it to be carried along with the movement of the casing.

When the startih'gkey P is 'depressedand lever S is turned aroundc by means of the printing-lever and arm d". -Heroby U isalso moved a certain distance along the'cir-j cumference of the spring-casing .A in the sense opposite to the rotation of the latter.

When the clockwork begins-to run, .U is car-' ried back by the casing A. The dimensions are so chosen that S will return into its original position after several turns of the typewh'eel. Then the nose N will break the contact between T and W, and at the same time R will be brought back into its original position. Thus all connections are severed and the instruments are brought back intotheir position of rest.-

Inorder-to be quite sure that all connec-' tions in the receiver have been separated before those of thetrausinitter are interrupted,

.an arrangement is provided by which the receiver is arrested after two turns of the shaft, the transmitter, "however, not before three. 7 revo1utions.- This object is obtained by the" circumstance that in the transmitter and the .receiver the lever B is shifted only a certain distance by the printing-lever G, and thereby "the spring'W, fastened to the arm (1 of the lever S, is depressed; Wheneverin the trane v mitter the lever B touches k, in the receiver it touches k. Consequently in the receiver the spring W is depressed, and in the trans mitter it moves freely. spring W being depressed will cause the lever S to return a certain distance, corresponding to the depression of the spring after the lever G has been lowered, and thereby a difference between the positions of the two levers S in aged by any one of the known 'methods end is not described, because it is no important part of this invention.

.When the instruments herein described are .9 5 to be operated with alternating currents-on vided. The relayH must he arranged'forl alternating currents, and some alterations must be introduced into the contact-making arrangement, which are shown in'Fig. The same apparatus is again eitherused'astransrnitter or as receiver; but it will be seen-Tthat' the arrangement of the connections is altered .in such a way that the relay of the transmitterremains at rest, andthe printing and start? ing' magnets are connected in parallelwith the line-circuit and are operated as. follows: When at rest, all parts take the positions shown in the drawings. --By depressing. the] starting-key P again both instrnmerits. are put into action. At'first the "lover s is rotated around 0 by meansof an arm a: of-the sliding bar Q, and thusfcontsct is made between T and It". By depressing the starting. button P still more the leverR is again'open ated. Inthisc'ase it changes twp contacts=- 1" touches lo, and r touches In. 7 Thus two circuits are closed. The one circuit is composed by the transmitter, the line, the I'808l\'el,'&lld the return-line. The other one is a-loc'al'ciw cuit which is connected in parallel with the line-circuit. The main circuit starts from the ,positive terminal of LB, passes over the hinding-post Z 1, 2, 10hr, 3, Z, line L, the receiver, line L", 2, 4, V, 5,6, K, k 7, 8, Z and back to the negative terminal offLB'. The path taken by the current in the re ceiver will be described hereinafter. Y

The shunt-circuit is composed as follows: Positive terminal of LB, Z21, 9, F, 10, E, 11,

w, k, 12, K, k 7, s, z, and back m the sa In the receiver the se the two instrumentsalways remains, and

Thetralnsportation of the paper'can bemani.

the line some slight modification must I too tive terminal of LB. This shunt-current operates E, because the direction of this current is opposed to that of the preceding current that has passed the magnetic system, and therefore the contact of the spring K is changed and contact is made between K and 1;. By this means a current of opposite di-' rection is sent from the battery LB through the line, as well as through the shunt. The line-current issues from the positive terminal of the battery LB, passes over Z 13, T, k ll, 15, k, K, 6, 5, V, 4, Z, L, the receiver L, Z", 3, 1' Z2", 2, 1, Z and back to the nega\ tive terminal of LBC' Thefcurrent in the shunt runs as follows: positive terminal of LB", 2?, 13, T, 75, i4, 1e",:7c,' l ,;l,2,.- T", .11, E, 10, F, 9, 1, Z, negative terminal of 'LBY': The current again passes E injtheopposite-direc-, tion, and therefore 'operatesfD, whereby. the" shaft of the type-wheel is allowed-t0 "turn;

Hereby K is again brought-into contact with? k and-the same play is repeated over again? From what has been explained'it'will bef-s'ejen that an alternating current flows through the line and only becomes a current of 'longer duration when the shaft of'the type-wheel is'arrested byone of the pins s by thedepr'ession of a letter-key in the manner described,

whereupon the printing-lever p paper against the type-wheel;

The path of the'current in the receiver runs as follows: When the starting-key is do pressed, the current enters the receiver loverline L. Here it passes over-Z 3, eye- ,1 H, 17, 5, V, 4:, Z", and returns over L to t'liuejresses' the transmitter. Hereby l-I is put in action, and; the arm It is made to toucha-flk and thus ;a

local current is closed whichissues from the positive terminal of LB, passes over Z 1, 9,-1

F, 10, E, 11, TI, 18, h, 70 19, 8,. Z, and back to the negative terminalof LB- Bythis means the electromagnet E is put in action;v

because this current passes it in a directiom opposed to thatof the precedingcnriient, and both instruments run in synchronism. In the receiver naturally the connection of T with 70 is not made vby means of the key P,

but rather by the printing-magnet, which-f causes G to lift the arm (V, as has been described above. If new a current passes the relay H in the oppositedirection, the contacts in the relay are changed, and those belongtype-wheel, contact device and escapementthe escapement-wheel, of an electromagnet controlled by the contact device and arranged to govern the anchor, and resilient means for I permitting the type-wheel to move a predetermined amount after the contact device is stopped, and for returning the contact device to its normal position relative to the typewheel after said contact device has again started in operation.

2. ,In a type-printing telegraph, the combi= nation with a type-wheel, a contact device, an escapement-wheel, a shaft on which the said type-wheel, contact device and escape inent-wheel are mounted, and an anchor en= gaging-the escapement-wheel, of an electromagnet controiled by the contact device and arranged to govern the-anchor, and a resilient coupling between the contact-device and type wheel-, whereby the latter is allowed to turn to aiiInited extent after the contact device has stopped and the latter is returned to, its normal position relative to the type-wheel, when said contact device has again started in operation. I

3. In a type-printing telegraph, the combi: tion with a type-wheel, a shaft on which thesame is fixed, and a contact device, of an escapement-wheel fixed to said shaft, electroinagnetic'r-mean; for operating said escape "mentvwheel to rotate the same, a circuit in '"which said electromagnetic means and the contact device are included, means for energizing the circuit,, me'ch'anism for positively ,fiexible coupling device, intermediate the fshaft and the contact device, whereby the escapement-wheel and the type-wheel may have a movement relative to the contact device afterthe'latter is stopped and the said contact normal "wheel.

4. In a type-printing telegraph, the combination with a transmitter type-wheel, a shaft on which the same is fixed, a contact device loosely mounted on said shaft, andprovided with a pair of stops, an escapement-wheel fixed on the shaftand provided with an arm projecting between and capable of lateral motion with relation to the stops on the contact device, a spring between said arm and one of the stops, an anchor engaging the escapement-wheel, an electromagnetarranged to operate the anchor, a circuit in which the said electromagnet and the contact device are position relative to the shaft and type circuit. 7

5. In a type-printing telegraph, the combination, with a type-wheel, a. contact device, an escapemcrct-wheel, a shaft on which the said type-wheel, contact device and escapeinent-wheel are mounted, and an anchor ongaging the escapement-wheel of an electrowheel are mounted, and an anchor engaging stopping said contact device, and a resilient device, when'released, will be returned to its included, and means for energizing the said magnet controlted by the contact device and} xer, and a nose on the type-wheel shaft ar- 19 arranged to govern the anchor, means for arranged to actuate the iatter contact device.- resting the typewheel upon the de ression of In testimony whereof I have affixed my siga letter-key, a lever, a clockwork or driving nature in presence of two witnesses. I

the msirument, means operated by the clock- L FRANKE' work for moving said. lever, a printing-lever,

means for returning said lever to its normal Witneswsa: position, upon the operation of the printing- E CHARLES H. DAY,

level, a contact device connected e said le- HENRY HASPER. 

